I had been on Depo-Provera for a number of years and it had been studied that there could be bone loss with the use. I could have been a lucky one that it did but all the years since no one has dwelt on that piece. The fact that I had fainting spells from late teens until now...and the diagnosis of systemic mastocytosis in 2005 seem to be the connection. Having a bone marrow biopsy and finding mast cells in the marrow could weaken the bones. I always had enough dairy and weight bearing exercises.